近期物流用户在工作中遇到新的问题。在分包业务中的原材料后继（物料主数据设定非连续标识及后继物料）不成功问题。对于未知应用，需要先研究期可行性，与问题或故障不同，如果系统本身就不支持，再多分析测试也只是徒劳。
因此，针对性的在SAP社区找到一些信息。也确实有不可行这样的说法。
接下来，毕竟这些信息来自于用户或顾问，无法代表SAP厂商。为进一步求证，直接在网上向SAP官方提问如下：
当一个分包物料的下级原材料的物料主数据MRP4视图中设定了非连续标识及后继物料后，该物料的MRP结果，并未看到原材料后继替代生效。我想知道，SAP是否不支持这样的应用。
the discontinued and follow up material in materral master MRP4 does not work for subreq.
I want to konw. Whether the system does not support the application
得到回复如下：
The system behavior is correct by standard.
The discontinued part for subcontracting requirements is not supported in the standard system.
The discontinuation functionality is used to transfer dependent requirements of a component to one or several follow-up materials, if the requirements are no longer covered by stock.
Discontinuation only occurs at plant level but not MRP area or subcontracting stock segment (ECC system) -as you cannot maintain discontinuation data in the MRP area.
Also if a requirement exists outside the effective out date for discontinued material,
in this case, MRP run will not create new planning proposals even if the requirement cannot be covered by planned stock. The exception message 58: 'Uncovered reqmt after effective-out date (S6)' displays in MD05.
You may find more details from below documents.
##3083974 - MRP discontinuation does not work for subcontracting requirements.
0000550219 - FAQ: Subcontracting in the material requirements planning (point 3)
##43636 - Discontinuation control
